Sheet-separating mechanism



June 5, 1923. 1,457,776

c. HENDERSON SHEET SEPARATING MEGHANISM Filed Feb. l. 1922 ngllllllljl iig @MM M Patented June 5, 1923.

UNITED: j STAI wane:

`CARI. HENDERSON, OF CHICAGO, ILLINOIS, AssIGNon .TO'MIEIILE PRINTING PRESS. er

Y MANUFACTURING COMPANY, or CHICAGO, ILLINOIS, A CORPORATION OFIIQLINOIS.`

snEn'r-SEPARATING IvInoiIANIsM.

eppueationiviea February 1, 1922.l seriaruasaissl f To all whom t may concern,

Be it lInown that LCAIIIJ HENDERSON, a citizen OI" the. TJnited States, residing at Chicago, inthe countyfof Coolrand State of Illinois, have invented certainv new and useful Improvements in Sheet Separating Mechanism, of which theY vfollowing fis a specification.`

This 'invention relates to sheet separating mechanismA which may be used in printing presses and thef like. 'I

As is well known, there isA atendency for raising not only oney sheet but sometimes a second or a third sheet r of paper from a pile when the top sheetxis being withdrawn therefrom inthe feeding of paper vto a machine such for example as a printingpress.

One object of this invention is to provide simple and eflicient meansv wvhichais positive in its-actionfor separating asecond sheet from the top sheet when the latter isbeing withdrawn from a pile of sheet material.

Another object of the invention is to provide a simple and reliable paper separating device adapted to meet the various-requirements for commercial use. n

These and other objects are accomplished by means of the arrangement disclosed on the accompanyingv sheet of drawing, in which- Figure 1 is a front elevation of my sheet separating device; l

Figure 2 is a vertical longitudinal sec-` tional view taken in theplane of line 2-2 of Figure 1; and

Figure 3 is a transverse sectional view taken in the plane of line 3-3 of Figure 1.

The various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims.

In the sheet separating mechanism which I have here shown the second sheet of material is separated from the top sheet bya vibrating action.

Referring to the figures of the drawings it will be noted that the sheet separating mechanism includes a hollow tube 10 to the lower end of which is secured a rubber or ing made in any suitable manner, such as by a threaded collar 12 on which the shoe 11 is mounted and which is threaded onto the lower end of the tube 10. A shaft 13 is mounted concentrically within the tube 10 and I of a secondsheet from a rst sheet.

has both a vertical recipro'catory` movement and a rotary movement, the vertical movement vbe1ng ,f gu1ded by a perforatedspider .lllocatedfwithin the tubel 10.l The rotary movement i'sl guided by a member 15 which cO-operateswith the interior'surface of the'j wall ofthe tube and is provided with openings 16 through 'which air may p.a.ss`.-..l`lf1ev`v lower portion of guide member 15 is provided ,with a plurality V of lprojectionsl'p,-

giving thelower face of said member 15 in eect a cam shape. ride over a: pin 18 which maybe. securedto the lower end of the tube in any suitable manner'. As-.the projections 17 ride over the `pin 18 the shaft 13 and the stem 19 at .the Y These projections. 17 i lower fend thereof. aregiven 'ai vlerticalivi` bratory action The stem=19and its` shaft 13 arecau'sed to rotateby air sucked up through the tube-10 which airacts upona fan 20 secured to the shaft 13 below the guide spider 14:.

It is apparent therefore that as.` Y.

air is drawn upwardly through the tube 14 the fan 20 .rotates the Yshaftl, stem 19, and the member 15 secured thereto, causing,

pin 18, the stern 19 to have an up Aand down vibratory motion'. It is thisvibratory motion or action which causesthe separation This vibratory action will continue so long as air passes upwardlylthrough the tube 10, or in `other words, so long as the sheetx21' does notl seal the lowerend of the suction shoe 11. If

a secondsheet is drawn upwardly with the first sheet 21 the vibratory pounding action of the stein 19 upon the topsheet 21 will cause the second sheet to be separated from the top sheet. A vibratory action of short duration will suffice to separate the vsecond sheet from the first sheet, and accordingly the top sheet 21 may quickly seal the suction shoe 11, whereupon air will cease to pass upwardly through the tube`10 and the vibratory action of the stem 19 will cease. As

soon as thetop sheet 21 is withdrawn from vthe suction shoe 11 suction through the tube 10 will again beset up, causing a vibra- 'Ktory'actio'n of thestem 19.` flexible suction'shoe 11, the attachment beso through the action of the projections 17 4and terial to be Withdrawn from a pile, and vibratory means for separating a second sheet from the first sheet if a second sheet adheres to the first sheet.

2. In sheet separating mechanism, the combination of suction means for Withdrawing sheet material from a pile, and vibratory means co-operating with said suction means for separating a second sheet from the first sheet if' a second sheet adheres to the first sheet.

3. In sheet separating mechanism, the combination of a tube through which air passes for withdrawing sheet material from a pile, and Vibratory means actuated by air passing through said tube for separating a secondv sheet from a first sheet if a 'second sheet has been Withdrawn Jfrom the pile with the first sheet.

4. In sheet separating mechanism. the combination of a tube through which air passes .for drawing sheet material from a pile, a member mounted in said tube and driven by air passing therethrough, and means for vibrating said member ,for separating a second sheet ot material 'from a first sheet if a second sheet 'is Withdrawn from the pile With the first sheet.

5. In sheet separating mechanism, the combination of a tube through Which air passes for drawing sheet material from a pile, a member mounted in said tube and driven by air passing therethrough, means for vibrating said member for separating a second sheet of material from a first sheet if a second sheet is Withdrawn from a pile With the first sheet, and means for guidingsaid member in its vibratory movements.

6. In sheet separating mechanism, the combination of a tube through Which air may pass, a stem, means for actuating said stem, and a cam member associated with said stein whereby said stem is given a vibratory movement while air passes through said tube for separating a secon-d sheet from a first sheet if a second sheet is Withdrawn from the pile with the first sheet. i

7. In sheet separating mechanism, the combina-tion of a tube through which air passes for drawing sheet material from a pile, a suction foot mounted on vsaid tube, a stem movably mounted in said tube, a fanin said tube by means of which said stem is rotated, and cam means whereby said stem is vibrated for separating' a second sheet from a first sheet if a second sheet has been Withdrawn from the pile with the firstsheet.

.Signed at Chicago, Illinois, this 28th day` of December, 1921.

CARL HENDERSON. 

